CVE-2021-25489 : Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1

Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic.

Published 2021-10-06 18:15:10

Updated 2022-09-23 19:14:42

Source Samsung Mobile

View at NVD, CVE.org

Vulnerability category: OverflowInput validation

CVE-2021-25489 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Samsung Mobile Devices Improper Input Validation Vulnerability

CISA required action:

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

CISA description:

Samsung mobile devices contain an improper input validation vulnerability within the modem interface driver that results in a format string bug leading to kernel panic.

Notes:

https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10

Added on 2023-06-29 Action due date 2023-07-20

Exploit prediction scoring system (EPSS) score for CVE-2021-25489

EPSS FAQ

0.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 49 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-25489

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
3.3	LOW	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	1.8	1.4	Samsung Mobile
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-25489

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: mobile.security@samsung.com (Secondary)

CWE-134 Use of Externally-Controlled Format String

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Assigned by: nvd@nist.gov (Primary)

Products affected by CVE-2021-25489

Google » Android » Version: 8.1
cpe:2.3:o:google:android:8.1:*:*:*:*:*:*:*
Matching versions
When used together with: Samsung » Exynos » Version: N/A
Google » Android » Version: 9.0
cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*
Matching versions
When used together with: Samsung » Exynos » Version: N/A
Google » Android » Version: 10.0
cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*
Matching versions
When used together with: Samsung » Exynos » Version: N/A
Google » Android » Version: 11.0
cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*
Matching versions
When used together with: Samsung » Exynos » Version: N/A

Vulnerability Details : CVE-2021-25489

CVE-2021-25489 is in the CISA Known Exploited Vulnerabilities Catalog

Exploit prediction scoring system (EPSS) score for CVE-2021-25489

CVSS scores for CVE-2021-25489

CWE ids for CVE-2021-25489

References for CVE-2021-25489

Products affected by CVE-2021-25489